Asus M4A78LT - Manual (Page 30)

2. USB device wake-up (3-pin USBPW1-4, USBPW5-10)
Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped,
DRAM refreshed, system running in low power mode) using the connected USB
devices. Set these jumpers to +5VSB to wake up the compurer from S3 and S4 sleep
modes (no power to CPU, DRAM in slow refresh, power supply in reduced power
mode).
3. Keyboard power (3-pin KBPWR)
This jumper allows you to enable or disable the keyboard wake-up feature. When you
set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key
on the keyboard. This feature requires an ATX power supply that can supply at least 1A
on the +5VSB lead, and a corresponding setting in the BIOS.
M4A78LT Series
2 1 2 3
+5V
(Default)
+5VSB
USBPW5-8
2
1 2
3
+5V +5VSB
(Default)
USBPW1-4
M4A78LT Series USB Device Wake Up
M4A78LT Series
2 1 2 3
+5V
(Default)
+5VSB
KBPWR
M4A78LT Series Keyboard Power Setting
Chapter 1: Product introduction 1-20